Sewage emergency partition strong drainage method and system thereof

Abstract

The application discloses a sewage emergency partition strong drainage method and system, which comprises the following steps: S1: sewage is self-flowed from a drainage channel to a collecting well according to a height difference, and the sewage is drained into a municipal sewage pipe through a liquid level monitoring assembly and a submersible sewage pump group in the collecting well, wherein the liquid level monitoring assembly adjusts the number of submersible sewage pumps in the submersible sewage pump group according to the liquid level; S2: the water level is determined through the position of a floating plate on the liquid level of the collecting well, when the water level exceeds a first critical value, on the basis that all the submersible sewage pumps are opened, the water inflow is gradually reduced until the water inflow gate is closed through a water inflow gate control assembly; S2-1: when the water level exceeds a second critical value, on the basis of S2, the sewage is drained into an emergency drainage well through an emergency sewage discharge channel; and S3: when sewage backflow occurs, according to the change of the sewage flow direction, the sewage with the opposite flow direction is guided into the emergency drainage well through an anti-pollution channel.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a method and system for emergency isolation and forced drainage of wastewater. Background Technology

[0002] The sewage network adopts a gravity flow drainage method, relying on the elevation difference of the network for discharge, without valves or other isolation measures in between. Currently, the sewage network has the following problems: there is a risk of excessive discharge at the main sewage outlet; because the sewage is discharged through the elevation difference of the network without valves or other isolation measures in between, if the municipal sewage volume is excessive and the water level is higher than the sewage outlet level, backflow is likely to occur, leading to abnormal statistical data collected by the flow meter. In view of this, there is an urgent need for a sewage emergency isolation and forced drainage method and system to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a method and system for emergency isolation and forced drainage of sewage in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a method for emergency isolation and forced drainage of sewage, comprising:

[0005] S1: Wastewater flows by gravity from the drainage ditch to the collection well using the height difference, and is discharged into the municipal sewage pipe through the liquid level monitoring component and the submersible pump group in the collection well. The liquid level monitoring component will adjust the specific number of submersible pumps in the submersible pump group to be turned on according to the liquid level.

[0006] S2: The water level is determined by the position of the float plate on the liquid surface of the collection well. When the water level exceeds the first critical value, the water inflow is gradually reduced until the water inflow gate is closed, with all the submersible sewage pumps turned on.

[0007] S2-1: When the water level exceeds the second critical value, based on S, the sewage is discharged into the emergency drainage well by opening the emergency sewage discharge channel;

[0008] S3: In the event of sewage backflow, the sewage flowing in the opposite direction will be guided into the emergency drainage well through the backflow channel according to the change in sewage flow direction.

[0009] A wastewater emergency isolation forced drainage system suitable for the above method includes:

[0010] Drainage ditch, with gate placement slots at the bottom;

[0011] The water collection well is equipped with a float plate, an inlet gate control assembly, and an emergency sewage discharge channel; the inlet gate control assembly is connected to the drainage ditch, and the emergency sewage discharge channel is located at the bottom of the water collection well.

[0012] The control unit includes a liquid level monitoring component and a submersible pump set, which is located in the water collection well and is electrically connected to the liquid level monitoring component.

[0013] Emergency drainage wells are equipped with backflow prevention channels;

[0014] The emergency sewage discharge channel is fixedly connected to the floating plate and the emergency drainage well, respectively.

[0015] Preferably, the intake gate control assembly includes two sets of pull ropes, two sets of first guide wheels, two sets of second guide wheels, a U-shaped frame, two sets of 7-type pull plates, and a gate. The gate is located in the gate placement slot. The U-shaped frame is fixedly connected to the bank of the drainage ditch. The lower ends of the 7-type pull plates are fixedly connected to the gate in symmetrical positions, and the upper ends are symmetrically connected to the U-shaped frame. A connecting block is provided on one end of the 7-type pull plate that penetrates the U-shaped frame. One end of each of the two sets of pull ropes passes through the two sets of first guide wheels and the two sets of second guide wheels and is fixedly connected to the two sets of connecting blocks. The other ends are symmetrically connected to the floating plate.

[0016] Preferably, the vertical height of the first guide wheel is lower than the water level when the water level is at the first critical value.

[0017] Preferably, the emergency drainage well is located below the water collection well, and a partition layer is provided at the lower end of the water collection well.

[0018] Preferably, the emergency sewage discharge channel includes a fixed pipe and a moving pipe. The lower end of the fixed pipe penetrates the partition layer and is fixedly connected to it. The lower end of the moving pipe is slidably connected inside the fixed pipe, and its upper end is fixedly connected to the bottom of the floating plate.

[0019] Preferably, the moving pipe sidewall is provided with multiple emergency drainage holes, which are located at different heights of the moving pipe.

[0020] Preferably, the anti-pollution channel is located on the side wall of the drainage ditch near the collection well, and its vertical height is higher than the height of the collection well but lower than the vertical height of the drainage ditch.

[0021] Preferably, the upper end of the anti-pollution channel is inverted C-shape, with a horizontal slope at the upper end and the lower end located in the emergency drainage well.

[0022] Preferably, the liquid level monitoring component and the submersible pump set are electrically controlled.

[0023] Compared with the prior art, the beneficial effects of the present invention are: it adopts a physical method to control the inlet gate control component and the emergency sewage discharge channel according to the actual liquid level, realizes the real-time control of the inlet flow rate, and opens the emergency sewage discharge channel in time when the sewage volume in the collection well is too large. It prevents sewage backflow by controlling both the inlet flow rate and the sewage volume in the collection well. Even if backflow occurs, the sewage can be guided to the emergency sewage discharge well by changing the direction of water flow. Attached Figure Description

[0024] Figure 1 A schematic diagram of the process of a sewage emergency isolation and forced drainage system;

[0025] Figure 2 This is a structural diagram of a sewage emergency isolation and forced drainage system;

[0026] Figure 3 for Figure 1 Enlarged structural diagram at point A;

[0027] Figure 4 This is a schematic diagram of the structure of the water inlet gate control component in this invention;

[0028] Figure 5 This is a schematic diagram of the structure of the float plate and moving tube in this invention;

[0029] Figure 6 This is a schematic diagram showing the positions of the first and second critical values ​​in this invention.

[0030] In the diagram: 1. Drainage ditch; 10. Gate placement slot; 2. Collection well; 20. Float; 21. Inlet gate control assembly; 210. Pull rope; 211. First guide wheel; 212. Second guide wheel; 213. U-shaped frame; 2130. Connecting block; 214. Type 7 pull plate; 215. Gate; 22. Emergency sewage discharge channel; 220. Fixed pipe; 221. Moving pipe; 2210. Emergency drainage hole; 23. Partition layer; 3. Control unit; 30. Liquid level monitoring assembly; 31. Submersible sewage pump set; 4. Emergency drainage well; 40. Backflow channel; 401. Slope. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Please see the appendix Figure 1-6 A method and system for emergency isolation and forced drainage of sewage, comprising:

[0033] S1: Sewage flows by gravity from drainage ditch 1 to collection well 2 using the height difference, and is discharged into municipal sewage pipe through liquid level monitoring component 30 and submersible pump group 31 in collection well. The liquid level monitoring component 30 adjusts the specific number of submersible pumps in submersible pump group 31 to be turned on according to the liquid level.

[0034] S2: The water level is determined by the position of the float 20 on the liquid surface of the collection well 2. When the water level exceeds the first critical value, the water inlet flow is gradually reduced by the inlet gate control component 21 until the inlet gate is closed, based on the fact that all the submersible sewage pump groups 31 are open.

[0035] S2-1: When the water level exceeds the second critical value, based on S2, the sewage is discharged into the emergency drainage well 4 by opening the emergency sewage discharge channel 22;

[0036] S3: When sewage backflow occurs, the sewage flowing in the opposite direction will be guided into the emergency drainage well 4 through the backflow channel 40 according to the change in sewage flow direction.

[0037] A wastewater emergency isolation forced drainage system suitable for the above method includes:

[0038] Drainage ditch 1, the bottom of which is provided with a gate placement slot 10;

[0039] A water collection well 2 is provided with a float plate 20, an inlet gate control assembly 21, and an emergency sewage discharge channel 22; the inlet gate control assembly 21 is connected to the drainage ditch 1, and the emergency sewage discharge channel 22 is located at the bottom of the water collection well 2;

[0040] Control unit 3, the control unit 3 includes liquid level monitoring component 30 and submersible pump group 31, the submersible pump group 31 is located in the water collection well 2, and is electrically connected to the liquid level monitoring component 30;

[0041] Emergency drainage well 4, wherein the emergency drainage well 4 is equipped with a backflow channel 40;

[0042] The emergency sewage discharge channel 22 is fixedly connected to the floating plate 20 and the emergency drainage well 4 respectively.

[0043] In practical use, the sewage level in the collection well 2 is used to compare the inflow rate of the drainage ditch 1 with the drainage flow rate of the submersible sewage pump group 31. When the liquid level exceeds the first critical value, it means that the drainage flow rate of the submersible sewage pump group 31 in the fully open state is less than the inflow rate of the drainage ditch 1. When the liquid level exceeds the first critical value, as the liquid level continues to rise, the float 20 will continue to rise under the action of buoyancy. During this process, it will pull the pull rope 210. After being guided by the first guide wheel 211 and the second guide wheel 212, the pull rope 210 will exert a vertical upward pulling force on the 7-type pull plate 214 through the connecting block 2130. Under the action of this pulling force, the gate 215 will move upward, thereby affecting the flow rate of sewage in the drainage ditch 1 and accelerating the discharge of sewage in the collection well 2.

[0044] If the liquid level in the collection well 2 is still insufficient to lower the sewage level in the collection well 2 under the above conditions, it means that backflow has occurred. At this time, the float 20 will continue to rise with the liquid level, and at the same time, it will drive the movable pipe 221 fixedly connected to it to continue to move upward, and bring the emergency drain hole 2210 on the movable pipe 221 out from the fixed pipe 220. At this time, the sewage in the collection well 2 will flow into the emergency drainage well 4 through the emergency drain hole 2210, thus avoiding the situation where the sewage level in the collection well 2 is too high and flows back into the drainage channel 1. Even if some sewage in the collection well 2 flows back, it will also enter the emergency drainage well 4 through the backflow channel when it reaches the backflow channel 40.

[0045] Specifically, the inlet gate control assembly 21 includes two sets of pull ropes 210, two sets of first guide wheels 211, two sets of second guide wheels 212, a U-shaped frame 213, two sets of 7-type pull plates 214, and a gate 215. The gate 215 is located in the gate placement slot 10. The U-shaped frame 213 is fixedly connected to the bank of the drainage ditch 1. The lower ends of the 7-type pull plates 214 are symmetrically fixedly connected to the gate 215, and the upper ends are symmetrically positioned to penetrate the U-shaped frame 213 and slide with it. A connecting block 2130 is provided on one end of the 7-type pull plate 214 that penetrates the U-shaped frame 213. One end of each of the two sets of pull ropes 210 passes through the two sets of first guide wheels 211 and the two sets of second guide wheels 212, and then connects to the two sets of connecting blocks 2130. One end is fixedly connected to the other end, which is symmetrically fixed to the float plate 20. The position change of the float plate 20 drives the gate 215 to move up and down through the pull rope 210. Here, the traditional method of moving from top to bottom to block the water flow is abandoned. Instead, the gate is blocked from bottom to top. This method can effectively reduce the significant increase in water flow velocity during the blocking process. In addition, as the gate 215 moves upward, sewage will flow into the gate placement groove 10, which can provide a small buoyancy for the upward movement of the gate 10. Since one end of the pull rope 210 will be immersed in sewage for a long time, it is best to use a metal material such as an iron chain. The first guide wheel 211 and the second guide wheel 212 only serve to change the pulling direction of the pull rope 210, so they do not need to rotate themselves.

[0046] Specifically, the vertical height of the first guide wheel 211 is lower than the water level when the water level is at the first critical value. In this system, when the height of the float 20 does not exceed the first critical value, it means that the inflow rate of the drainage channel 1 is less than the drainage flow rate of the submersible sewage pump group 31. At this time, the pull rope 20 is in a state of no force, and the up and down movement of the float 20 will not affect the gate 215.

[0047] Specifically, the emergency drainage well 4 is located below the water collection well 2, and the lower end of the water collection well 2 is provided with a partition layer 23.

[0048] Specifically, the emergency sewage discharge channel 22 includes a fixed pipe 220 and a movable pipe 221. The lower end of the fixed pipe 220 penetrates the partition layer 23 and is fixedly connected to it. The lower end of the movable pipe 221 is slidably connected inside the fixed pipe 220, and its upper end is fixedly connected to the bottom of the floating plate 20.

[0049] In this system, the emergency drainage well 4 is located below the collection well 2 and is separated by a partition layer 23. However, this does not mean that the emergency drainage well 4 can only be located below the collection well 2. In practical applications, considering the depth of the well, if there is enough space, the emergency drainage well 4 and the collection well 2 can be located in different positions. In this case, the existing fixed pipe 220 can be directly converted into a connecting pipe between the emergency drainage well 4 and the collection well 2. After the moving pipe 221 moves upward to expose the emergency drainage hole 2210, the water in the collection well 2 can be pumped into the emergency drainage well 4 according to the principle of communicating vessels.

[0050] Specifically, the moving pipe 221 is provided with a plurality of emergency drainage holes 2210 on its side wall, and the emergency drainage holes 2210 are located at different heights of the moving pipe 221. The setting of multiple emergency drainage holes 2210 at different heights of the moving pipe 221 can ensure that the liquid flows into the emergency drainage well 4 at different liquid levels at different speeds, avoiding the situation where the instantaneous excessive pouring speed causes the float 20 to shake violently due to the upper limit position change, and thus the moving pipe 221 is damaged.

[0051] Specifically, the backflow channel 40 is located on the side wall of the drainage ditch 1 near the collection well 2, and its vertical height is higher than the height of the collection well 2 but lower than the vertical height of the drainage ditch 1. In the event of backflow, the liquid surface will inevitably fluctuate, and the water flow will inevitably flow towards the drainage ditch 1. To prevent some of the moving sewage from entering the drainage ditch 1 during this process, the backflow channel 40, which is set at a position where its vertical height is lower than that of the drainage ditch 1, can better guide some of the moving water flow into the emergency drainage well 4.

[0052] Specifically, the upper end of the anti-pollution channel 40 is in the shape of an inverted C, with a horizontal ramp 401 at the upper end and the lower end located inside the emergency drainage well 4. The ramp 401 at the upper end of the anti-pollution channel 40 can effectively prevent sewage from the lower part of the drainage channel 1 from entering the emergency drainage well 4 through the anti-pollution channel 40 during normal use of the collection well 2.

[0053] Specifically, the liquid level monitoring component 30 and the submersible pump group 31 are electrically controlled. Considering that the operation of the submersible pump must be electrically powered, the liquid level monitoring component 30 and the submersible pump 31 are controlled by the same control system. It should be noted that, although not explicitly stated in the claims, the submersible pump group 31 needs to install at least one submersible pump in the emergency drainage well 4 to achieve the purpose of discharging sewage from the emergency drainage well 4 during normal operation of the sewage system.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for emergency isolation and forced drainage of sewage, characterized in that, include: A sewage emergency isolation drainage system, the system including a drainage ditch (1), the bottom of which is provided with a gate placement slot (10). A water collection well (2) is provided with a float plate (20), an inlet gate control assembly (21) and an emergency sewage discharge channel (22); the inlet gate control assembly (21) is connected to the drainage ditch (1) and the emergency sewage discharge channel (22) is located at the bottom of the water collection well (2); The control unit (3) includes a liquid level monitoring component (30) and a submersible pump group (31). The submersible pump group (31) is located in the water collection well (2) and is electrically connected to the liquid level monitoring component (30). Emergency drainage well (4), wherein the emergency drainage well (4) is equipped with a backflow channel (40); The emergency sewage discharge channel (22) is fixedly connected to the floating plate (20) and the emergency drainage well (4) respectively; The inlet gate control assembly (21) includes two sets of pull ropes (210), two sets of first guide wheels (211), two sets of second guide wheels (212), a U-shaped frame (213), two sets of 7-type pull plates (214), and a gate (215). The gate (215) is located in the gate placement slot (10). The U-shaped frame (213) is fixedly connected to the bank of the drainage ditch (1). The lower ends of the 7-type pull plates (214) are symmetrically fixedly connected to the gate (215). 15) The upper end of the 7-type pull plate (214) penetrates the slanted frame (213) and is slidably connected to it in a symmetrical position. A connecting block (2130) is provided on one end of the slanted frame (213) through the 7-type pull plate (214). One end of the two sets of pull ropes (210) passes through the two sets of first guide wheels (211) and the two sets of second guide wheels (212) and is fixedly connected to the two sets of connecting blocks (2130). The other end is fixedly connected to the float plate (20) in a symmetrical position. The emergency drainage well (4) is located below the water collection well (2), and the lower end of the water collection well (2) is provided with a partition layer (23). The emergency sewage discharge channel (22) includes a fixed pipe (220) and a moving pipe (221). The lower end of the fixed pipe (220) penetrates the partition layer (23) and is fixedly connected to it. The lower end of the moving pipe (221) is slidably connected inside the fixed pipe (220), and its upper end is fixedly connected to the bottom of the floating plate (20). The moving pipe (221) has multiple emergency drainage holes (2210) on its side wall, and the emergency drainage holes (2210) are located at different heights of the moving pipe (221). Emergency isolation and forced drainage methods for sewage include: S1: Sewage flows by gravity from the drainage ditch (1) to the collection well (2) using the height difference, and is discharged into the municipal sewage pipe through the liquid level monitoring component (30) and the submersible pump group (31) in the collection well. The liquid level monitoring component (30) adjusts the specific number of submersible pumps in the submersible pump group (31) according to the liquid level. S2: The water level is determined by the position of the float (20) on the liquid surface of the collection well (2). When the water level exceeds the first critical value, the water inlet is gradually reduced until the water inlet gate is closed by the inlet gate control component (21) on the basis of the submersible sewage pump group (31) being fully opened. S2-1: When the water level exceeds the second critical value, based on S2, the sewage is discharged into the emergency drainage well (4) by opening the emergency sewage discharge channel (22); S3: When sewage backflow occurs, the sewage flowing in the opposite direction is guided into the emergency drainage well (4) through the backflow channel (40) according to the change in sewage flow direction.

2. The emergency isolation and forced drainage method for sewage as described in claim 1, characterized in that: The vertical height of the first guide wheel (211) is lower than the water level when the water level is at the first critical value.

3. The emergency isolation and forced drainage method for sewage as described in claim 1, characterized in that: The anti-pollution channel (40) is located on the side wall of the drainage ditch (1) near the water collection well (2), and its vertical height is higher than the height of the water collection well (2) and lower than the vertical height of the drainage ditch (1).

4. The emergency isolation and forced drainage method for sewage as described in claim 3, characterized in that: The upper end of the anti-pollution channel (40) is in the shape of an inverted C, and its upper end is provided with a slope (401) in the horizontal direction, while its lower end is located in the emergency drainage well (4).

5. The emergency isolation and forced drainage method for sewage as described in claim 1, characterized in that: The liquid level monitoring component (30) and the submersible pump group (31) are electrically controlled.

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